This ornate and moving accessory is by noted Israeli artist Samuel Bak and is signed "Bak 1/66" on the lower portion of the front. The angel measures 2 1/2" long x 2" at her widest point. Her wing reads "Israel" in Hebrew. I have encountered other copies of this brooch twice previously on the Internet, and in each case, the top of her scepter and the faux-turquoise stone perched upon it were missing. This one, however, is in splendid vintage condition. My assumption is that this was part of a limited-edition series.